AGS would be a start, a pair of programmable aux relay would be handy, one could be used for AGS. But the 100A is a bit small for my needs. I'd rather not run the generator daily and 1200Ah,+ would take ages at 100A to refill.
That brings up another point, I couldn't get an answer on if the lux aux relay is functional.
A further issue is the inverter can only ac couple on the gen port. Even if I DC coupled my main array, I have an AC coupled outbuilding, there is no realistic way to wire that building to the gen port - it's fed from the main panel board ie the eps port.
If lux/ss can get Ac couple to function on the EPS port that solves all the issue I have - other than aux relay. If not it's legacy companies like Schneider, Outback and sma.